Building Characteristics
The Building Characteristics panel describes building floor area and how it is distributed, along with building envelope characteristics.
Building Characteristics section of Building Characteristics panel
Total floor area (gross). The total gross building floor area of the building(s) on site. Gross floor area is inclusive of internal hallways, lobbies and other common areas; space for building systems; and other non-leasable space. Net-to-gross floor area factors for residential and non-residential building area are set in the Floor Area Allocation panel.
Residential. The amount of gross floor area dedicated to residential uses, expressed as an absolute value or as a percentage of total floor area.
Non-Residential. The amount of gross floor area dedicated to non-residential uses, expressed as an absolute value or as a percentage of total floor area.

Building Envelope

The Building Envelope section of the Building Characteristics panel contains attributes describing building height and below-ground area.
Building Envelope section of Building Characteristics panel
Below-ground area. The amount of area dedicated to basements and other below-ground space, and not used for parking. This value is not associated with the values for gross floor area, so any value entered here is informational.
Number of floors. The number of floors or stories in the building. This value is tethered with average floor height and building height such that building height is the product of the number of floors and average floor height. The number of floors is not associated with values for building square footage, site coverage, or FAR.
Average floor height. Average floor-to-floor height for the building. This value is tethered with the number of floors and building height such that average floor height is the quotient of the building height and number of floors. Floor height is not associated with values for building square footage, site coverage, or FAR.
Height. The height of the building. This value is tethered with the number of floors and average floor height such that building height is the product of the number of floors and average floor height. Building height is not associated with values for building square footage, site coverage, or FAR.
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